These are the people that, next to you, will be central to your performance and wellness journey.

JOHN BELTON, Head Coach & Owner

Head couch and owner of No.17, John is the brains and brawn behind the whole operation. With 15 years of experience and over 15 different qualifications ranging from physical therapy to life coaching to hormone optimization, he promotes a completely holistic approach to health and wellness.

KEVIN BELTON

From competing in the World Triathlon Event for Europe to qualifying for the Irish Duathlon Team to being the acting physical therapist for the Irish Ultra-marathon Team, Kevin has a wealth of fitness experience and interests. Coupled with an impressive list of qualifications he's your ‘go to’ on most things!

MARK SHEERAN

A man of many trades, Mark Sheeran understands the power of positive change through setting goals and forming habits to support his clients who are looking for a lifestyle change. Aside from being a highly sought-after trainer, he is also our 'go to' food guru as a qualified nutritional scientist.

JILL SRIGLEY

With a background in aerial dance, Jill is interested in movement, mobility, and exploring the body’s ability in all ranges of motion. Beyond the physical, she also encourages open conversation and self-awareness to achieve mental strength and resilience.

ADRIENNE MURPHY

Adrienne leads our presence in the Marker Hotel alongside her work in the vault. Coming from a corporate background, she understands firsthand the symptoms of burnout and the impact of work stress and is passionate about helping her clients achieve their own balance.

LIAM BELTON

Whether he’s holding the pads for a boxing session or coaching an Olympic lift, Liam is a talented instructor who brings out the best of his clients’. His own interests in fitness are well-rounded, from track to his impressive gymnastic and calisthenic skills.